Home / 156,736.69-216,376.29-99,434.54

Finding the Fourth Proportional to 156,736.69, 216,376.29 and 99,434.54

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Solution

The fourth proportional to 156,736.69, 216,376.29 and 99,434.54 is: 137,270.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,736.69 : 216,376.29 = 99,434.54 : x
  2. Step 2: Convert to fraction form
    156,736.69/216,376.29 = 99,434.54/x
  3. Step 3: Cross multiply
    156,736.69x = 216,376.29 × 99,434.54
  4. Step 4: Simplify right side
    156,736.69x = 21,515,277,404.00
  5. Step 5: Solve for x
    x = 21,515,277,404.00/156,736.69
  6. Step 6: Final answer
    x = 137,270.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.